Housekeeping

Moved cache to hidden file.  Added to gitignore
Cleaned attempts at using other libs.
Refactored out a desk_http function
 - Todo: Create functions for building desk urls.  I'm picturing desk_case('search', array('subject' => 'bug report')) as a way to use the case api's search function.
 - Move desk functions to their own folder.
Merge branch 'master' of github.com:openscholar/integrated_support